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1-Naphthylethylenediamine Hydrochloride

    • Product Name 1-Naphthylethylenediamine Hydrochloride
    • Alias NED
    • Einecs 219-018-8
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    818730

    Product Name 1-Naphthylethylenediamine Hydrochloride
    Chemical Formula C12H15ClN2
    Molecular Weight 222.72 g/mol
    Appearance White to light beige crystalline powder
    Melting Point 160-165°C
    Solubility In Water Soluble
    Cas Number 50562-28-2
    Storage Temperature 2-8°C
    Purity ≥98%
    Synonyms N-(1-Naphthyl)ethane-1,2-diamine hydrochloride
    Pubchem Cid 87690
    Boiling Point Decomposes before boiling
    Inchi Key HTBOJJWQPBAYNZ-UHFFFAOYSA-N
    Usage Analytical reagent, azo-dye coupling reagent

    As an accredited 1-Naphthylethylenediamine Hydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Brown glass bottle, screw cap, white label with hazard symbols. Contains 25 grams of 1-Naphthylethylenediamine Hydrochloride. Store cool, dry.
    Shipping 1-Naphthylethylenediamine Hydrochloride is shipped in tightly sealed containers to prevent moisture absorption and contaminant exposure. The packaging complies with chemical safety standards, including labeling and documentation. Transport is conducted under cool, dry conditions, and in accordance with applicable regulations for hazardous chemicals, ensuring safe delivery. Handle with gloves and proper protective equipment upon receipt.
    Storage `1-Naphthylethylenediamine Hydrochloride` should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizers. Protect it from moisture and light. Ensure proper chemical labeling and access limited to trained personnel. Follow local regulations and safety procedures for storage and handling.
    Application of 1-Naphthylethylenediamine Hydrochloride

    Applications of 1-Naphthylethylenediamine Hydrochloride in Industrial Manufacturing

    As an established chemical manufacturer, we supply 1-Naphthylethylenediamine Hydrochloride for critical roles in industrial analytical chemistry, particularly in fields where controlled, high-purity detection of nitrite is required. Our high-quality product supports sectors demanding exact compliance, reliable formulation performance, and stringent integration into distinct technical workflows.

    1. Environmental Water Analysis Reagent Production

    Analytical test manufacturers rely on this raw material to formulate colorimetric reagents used in standardized detection of nitrite levels in environmental monitoring programs. Compliance with regional and international water quality assessment protocols demands reliably pure input materials. The raw material serves as a diazotization coupling agent in photometric test kits, entering production during the preparation of reagent solutions prior to batch filling for field kits, benchtop analyzers, and auto-samplers. Finished goods from this process include nitrite detection test kits for surface and drinking water laboratories, as well as on-site rapid analysis strips.

    Industry compliance standards

    • ISO 6878 (Water quality—Determination of phosphorus—Ammonium molybdate spectrometric method, utilizing diazotization agents)
    • US EPA Method 354.1 (Nitrite by Colorimetry)
    • EN 26777 (European Standards for Nitrite Determination in Water)
    • Standard Methods for the Examination of Water and Wastewater (APHA/AWWA/WEF: Method 4500-NO2- B)

    Typical usage ratio

    • Reagent formulations typically require 0.1–0.5% w/v, adjusted based on detection sensitivity and sample matrix complexity; higher concentrations may be used in high-range kits as required by method calibration ranges.

    Downstream process integration

    • Added during aqueous reagent solution formulation, immediately before filling into test vials or strips; handled in controlled environments to prevent contamination and ensure consistent batch-to-batch analytical performance.

    Final product types

    • Water quality test kits (liquid and powder reagents)
    • Automated chemistry analyzer cartridges
    • Field test strips for nitrite screening
    • Calibration standards and certified reference materials

    2. Clinical Diagnostics Reagent Formulation

    Clinical diagnostics manufacturers deploy this intermediate in the preparation of reagent cocktails for laboratory-based and point-of-care urine nitrite tests, essential for screening urinary tract infections. These applications operate within a pharmaceutical grade environment to meet regulatory scrutiny, particularly regarding patient test safety and analytical specificity. The chemical integrates into formulation processes following pre-mixing of primary buffer agents, and precedes sterile filtration and kit assembly. End products take the form of diagnostic test strips and reagent sets deployed in clinical labs and hospitals.

    Industry compliance standards

    • European Pharmacopeia (Ph. Eur.) requirements for in vitro diagnostic reagents
    • US FDA 21 CFR 820 (Quality System Regulation for Medical Devices)
    • ISO 13485 (Medical devices—Quality management systems)
    • CE-IVD Directive (98/79/EC) for diagnostic medical devices

    Typical usage ratio

    • Formulation levels generally range from 0.2–0.7% w/w depending on the diagnostic kit’s detection window and the matrix effect in clinical urine samples; precise adjustment is set during assay development validation.

    Downstream process integration

    • Blended with ancillary colorimetric system agents in batch tanks, then subjected to sterile filtration before deposition onto absorbent test pads or blending into liquid reagent vials for diagnostic kits.

    Final product types

    • Urine test strips for medical diagnostics
    • Pre-filled nitrite reagent dropper bottles
    • Automated analyzer reagent packs
    • Point-of-care diagnostic cartridges

    3. Food Industry Nitrite Analysis Kit Manufacturing

    Within food safety laboratories and manufacturing QA, this compound often features as a component of certified analysis kits for regulatory determination of residual nitrite in processed meat products. Its high analytical purity supports compliance with strict consumer safety protocols. Entry into production occurs during the formulation of color development reagents, often combined with sulfanilamide in buffer matrixes for stabilized shelf-life. Output includes test kits designed for regulatory reporting and production process audits.

    Industry compliance standards

    • Codex Alimentarius (General Standard for Contaminants and Toxins in Food and Feed, CODEX STAN 193-1995)
    • ISO 2918 (Meat and meat products—Determination of nitrite and nitrate contents)
    • EU Regulation (EC) No 1333/2008 (Food additives: nitrites in meat products)
    • USDA FSIS Laboratory Guidebook (Nitrite determination methods)

    Typical usage ratio

    • Formulated at 0.3–0.6% w/v in analytical reagent blends, adjusted during validation for extraction efficiency from processed food matrices such as cured meats and sausages.

    Downstream process integration

    • Mixed during preparation of ready-to-use or concentrated color reagent solutions, usually following dissolution of solvents and stabilizing additives; filled under controlled conditions for laboratory or field use.

    Final product types

    • Food nitrite detection kits
    • QC reference reagents for meat processing monitoring
    • Portable analysis kits for factory and laboratory environments
    • Colorimetric cuvette reagents for food residue testing

    4. Industrial Wastewater Monitoring Solutions

    Producers of industrial wastewater monitoring equipment integrate this chemical into reagent packs used to quantify nitrite concentrations in effluent streams, satisfying regulatory discharge limits and enabling continuous or batch monitoring. Its use aligns with industrial environmental compliance systems. During downstream processing, the compound is dissolved in deionized water, buffered, and then combined with additional reagents prior to dispensing into sealed ampoules or on-line testing reservoirs. Finished goods include single-use reagent kits, automated analyzer solutions, and on-site test pack cartridges for industrial facilities.

    Industry compliance standards

    • ISO 11905-1 (Water quality—Determination of nitrogen—Spectrometric method)
    • US EPA Method 353.2 (Determination of Nitrite-Nitrogen by Automated Colorimetry)
    • Industrial wastewater discharge permits (stipulating method validation with reference to national or local environmental standards)
    • EN ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

    Typical usage ratio

    • Usual concentrations range from 0.05–0.4% w/v in working reagent packs, with precise dosing determined by analyzer manufacturer requirements and target effluent parameters.

    Downstream process integration

    • Employed in the aqueous reagent recovery stage, following dissolution of stabilizers and prior to filling system reservoirs or cartridge modules for online analyzers and portable test stations.

    Final product types

    • Pre-filled wastewater test reagent ampoules
    • Automated analyzer reagent packs
    • Site monitoring colorimetric test kits
    • Lab validation reference standards
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    Certification & Compliance
    More Introduction

    1-Naphthylethylenediamine Hydrochloride: Authentic Insight from the Manufacturer

    Crafted from Real Plant Experience

    In the world of fine chemicals, 1-Naphthylethylenediamine Hydrochloride stands out as a substance we’ve come to know not just from books, but from the daily rigor of actual production lines. Over years, production batches taught us more than theoretical guides ever could—how consistency in synthesis determines its use, why impurity control locks in downstream accuracy, and what clients value during QA: clarity, reproducibility, and prompt answers from those who actually make the stuff. We put our hands on the raw naphthylamine, coordinate temperatures, monitor the hydrochloride addition, and check each phase with the same level of scrutiny as the earliest days. For us, every vial ties directly back to our craft and reputation.

    Understanding What You Get: Model and Specifications

    When buyers talk with us, the conversation quickly shifts away from textbooks and toward their reality. Research labs ask for clarity, test solutions need color response, and those measuring nitrite content in water want their results to match the standard methods. We prepare 1-Naphthylethylenediamine Hydrochloride most often in white to pale pink crystalline powder, with a melting point usually ranging between 198-202°C; batch consistency comes from careful temperature control in the final step. Solubility in water is crucial—prompt, clear dissolution avoids artefacts during Griess reactions. Over years, we realized trace impurities like 2-naphthylamine or excess acids trigger false positives in sensitive tests. Customers—especially those in water quality control—often call us after bad experiences elsewhere, telling stories of ghost signals traced back to off-spec lots. That feedback loop led to tighter internal checkpoints, frequent titration of free hydrochloric acid, and layered recrystallization schedules.

    Each kilogram we send out matches a documented purity, typically above 99%, checked by both HPLC and UV-vis for key signature peaks. Quality metrics include loss on drying, ash content, and residual solvents, which often fly under the radar except for buyers who’ve had batches wrecked by water or ethanol traces. We guarantee rapid breakdown of documentation because it’s our own tech team talking, not a distant sales office. Scarcity of off-gassing byproducts lets this compound work smoothly as a chromogenic reagent, especially in environmental analysis. Many testing protocols worldwide expect those exacting standards. No client should resort to double-checking our output with outside labs; that burden falls on us, and we’ve invested to make sure it stays that way.

    What It’s Really Used For—And Why It Matters

    Our primary experience with 1-Naphthylethylenediamine Hydrochloride comes from labs measuring nitrite levels—the Griess reaction’s reliability depends on it. We’ve sanded down processes for reagent formulation to avoid headaches like cloudy solutions, slow development of color, or contamination-induced shifts in the calibration curve. Field inspectors and water analysts need their readings to stand up to official scrutiny; anything less than consistent dye formation could mean the difference between safe or unsafe public water systems. When users call us about a questionable result, we always check raw material certificates, not just the batch COA, so trace contaminants don’t slip through the cracks.

    Beyond nitrite testing, our product features in dye studies and colorimetric assays. Academics reach out during method development, asking for reproducibility with the reference literature, and we dive into logs to share the synthesis details—not just spec sheets. We’ve responded to requests for larger crystals for easier handling, or ultra-fine powder for quick dispersion. Trying different sieves and drying protocols, we collaborate with users till their procedures run without surprises. Those back-and-forths built our practical know-how, filling gaps left by literature and theory.

    Nuances Setting Our Material Apart from Lookalikes

    Not all 1-Naphthylethylenediamine Hydrochloride comes out equal. Over the years, we’ve tested and compared batches from peers, sometimes reacting to client complaints about off-brand or discolored powders. Faint brown hues or residual odors directly affect results in the Griess test; yellowish cast often points to oxidized naphthylamine, so our team rigidly manages oxidation steps. We recall a client in the food industry disappointed by vague results with another source; running our material side by side erased the uncertainty. Mid-2020, a municipal water lab said their imported batch failed their blank test, only passing once they switched to ours. These are not marketing claims—they’re real-case feedback that stirs us to tighten controls and log every minor deviation in the plant.

    Competitive products sometimes use simplified purification to save costs, leaving residual starting amines or mineral acids. Our plant prioritizes staggered washing and drying, verified by GC and colorimetric baseline checks. The slight premium in cost arises from those extra steps, not fancy branding—customers focused on trustworthy results see the value when their regulatory audits pass smoothly. Over the past decade, we quietly upgraded glass-lining reactors to avoid trace metal contamination. Some buyers, especially in pharma, flagged metallic residue in off-the-shelf material from other vendors; no one deserves a failed QC from nickel or iron traces. Real-world feedback refines our QC beyond any internal checklist, and unlike traders, we can alter the process directly and immediately.

    Packaging matters, too. Every batch leaves our site in opaque, tightly sealed containers, because we’ve found—after a few costly mishaps on long-haul shipments—that light and humidity can ruin a shipment’s usability. Years back, we tracked a shipping issue that led to unusual powder clumping. Now, double-bagging and moisture indicators ride alongside every kilo that leaves our plant.

    Why We Stick with Tried-and-Tested Procedures

    Some suppliers claim shortcuts or greener syntheses, advertising minimal waste or lower temperature steps, but we’ve stuck with time-proven routes for a reason. Modernizations only stay on our floor when they clear routine stress tests for yield and purity. We’ve experimented with alternative oxidants, and every time a slight uptick in decomposition or side reactions shows up in the stats, we shelve the approach and go back to our original track. Our old-timers remind us that every improvement pays off when QC headaches don’t chew up days during order fulfillment.

    Recent years brought calls for even tighter limits on trace organic byproducts and heavy metals, especially from pharmaceutical and environmental clients. By investing in higher-spec filtration and redundant lot checks, we ensure each delivery aligns with their stipulated reporting limits. Unlike traders who may shop among factories, we monitor every reaction vessel, every storage drum, and every shipment, carrying knowledge from repeated cycles of small-scale to industrial runs. These close controls translate straight into reliability for clients: no scramble for revalidation or emergency procurement, plenty of regulars who give us heads-ups on new regulation shifts so we can adapt jointly.

    Supporting Laboratories with Real-World Usability

    Regular users often reach out before ordering their next batch, describing shifts in their own methods. Sometimes, a client’s SOP changes, and they tap our team for advice tailored to a new protocol—what filtration method works best, how to spot a subtle impurity, which color standard reflects a correctly run Griess assay. Our crew makes availability a top priority, not as a sales point, but because walking labs through troubleshooting feeds right back into our own process notes. This ongoing partnership keeps our material aligned with balancing sensitivity, shelf stability, and unmatched accuracy for even small-scale research groups.

    We closely listen to clients grappling with variations introduced by local water supplies, glassware quality, or storage fluctuations. Years of cumulative troubleshooting yield specific, actionable adjustments—not canned responses, but grounded practice. When a problem surfaces, our team examines both the chemistry and the logistics, recalling factory notes and past responses to prevent repeats. When regulatory shifts cross into new jurisdictions, requiring additional documentation, we ramp up support—making sure every certificate, log, and test record is ready ahead of time. Commitment here stems less from formal policy, more from the pride in doing right by colleagues on the other end of the work.

    Adapting to Industry Change Without Compromising Reliability

    Chemistry doesn’t rest, and neither do its safeguards. With stricter food, pharma, and environmental rules emerging, we proactively scan regulatory trends. We regularly check incoming raw naphthylamine for banned impurities and demand full traceability, no matter how steady the supply. There’s no point in wishing risks away; instead, our team stays agile through test plans and periodic plant audits to validate every assumption from the ground up. Several times, partners worried when outside suppliers shifted to lower-purity feedstocks; we kept our lines clean and documentation risk-free, so they transitioned without a hitch.

    Internally, we stress small-batch validation every time a process tweak is planned. That hands-on approach grounded production protocol adjustments, letting us guarantee every improvement works in real-world conditions, not just on paper. QA works side by side with production, not as an external oversight; this trimmed down resolution cycles whenever something unexpected turned up—like a faint but persistent off-odor logged in a 2019 lot, eventually traced to a supplier batch switch.

    Recently, the shifting spotlight on analytical reproducibility across global labs means more users want details from us—statistical trends in melting points, loss on drying across seasons, minute FTIR spectra deviations, or every colorimetric reading plotted out for long-term drift tracking. Our QA logs and plant journals remain open, with nothing watered down for PR gloss. We know researchers trust direct access to the source, not stock answers funneled down from marketing; because of this, clients know what they’re buying, and our relationship runs on transparency, not just paperwork.

    Supporting Research and Industrial Trust: Not Just a Product, But a Relationship

    Every time a consignment leaves our plant, the effort stays personal—because it reflects our crew’s shared time and know-how. Multinational clients might move millions of tests based on our work, but single-lab researchers worldwide get our full attention too. We actively encourage users to share feedback, especially where our material interacts with tricky conditions—harsh climates, extended storage, or rare application tweaks. Factory know-how builds from those updates, creating a cycle where quality rises, problems get rooted out fast, and users never feel left out of the loop.

    We remember every story where our material solved real problems. There was the municipal water team that called during a contamination scare, needing assurance of baseline nitrite readings; their job and public safety rested partly on our process, and feedback after the crisis spurred even tighter post-synthesis controls in our plant. Others, like a university research group that needed larger crystal grades for a particular dispenser, sent back photos and detailed logs, letting us troubleshoot and tweak by direct evidence, not remote theory. Those experiences keep our focus real and responsibility direct.

    Looking to the Future While Owning Our Results

    Across all product lines, we hold to a straightforward belief: stewardship over every batch sets the future for both our plant and the industry. When unexpected challenges arise—be it regulatory overhauls, client standard shifts, or supply hiccups—we pull in plant engineers, QC, logistics, and all feedback from users. Instead of chasing novelty, we double down on root-cause analysis, incremental process tightening, and clear communication. Our history with 1-Naphthylethylenediamine Hydrochloride singles out one persistent lesson: long-run reliability relies not on grand gestures, but in sober, daily vigilance throughout the supply chain.

    Collaboration with regulators, peer labs, and research centers keeps us on our toes. We monitor emerging testing needs while upholding the details that have made our product a mainstay among recurring partners. We openly share learnings from production shifts, material-side advances, or packaging tweaks, trusting that transparency cements both trust and continual improvement. For us, the goal looks straightforward: help clients get better results, make sure our material never costs them a lost day in the lab, and ensure every batch of 1-Naphthylethylenediamine Hydrochloride upholds not just specifications, but reputation—ours and theirs, linked for the long haul.